Home / 13,104.40-18,084.10-7,136.10

Finding the Fourth Proportional to 13,104.40, 18,084.10 and 7,136.10

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Solution

The fourth proportional to 13,104.40, 18,084.10 and 7,136.10 is: 9,847.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.40 : 18,084.10 = 7,136.10 : x
  2. Step 2: Convert to fraction form
    13,104.40/18,084.10 = 7,136.10/x
  3. Step 3: Cross multiply
    13,104.40x = 18,084.10 × 7,136.10
  4. Step 4: Simplify right side
    13,104.40x = 129,049,946.01
  5. Step 5: Solve for x
    x = 129,049,946.01/13,104.40
  6. Step 6: Final answer
    x = 9,847.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.